The most common feature that people ask for when building a custom home is a basement. Having a whole extra floor in your house creates a lot more living space, without extending the footprint of the house itself. From adding extra bedrooms to creating a utility area or “man cave”, basements open up a wealth of options for what you can do with your new home. In most cases, adding a basement on to house plans is simple, so long as the soil in the area is up to standard.